HOMEWORK HELP Thread

[Chucky]

Guys...I desperately need help working my TI-83 calculator. I need to make a graph that has two variables on it...how would I go about doing that? +rep and such

[Brent]

Originally Posted by thefalconer

i have to write a short two page paper for international politics. prompt: what factors explain the ability of north korea to continue to resist the demands of the united states, china, japan, and other powerful countries?

what trade is conducted between North Korea and any of the countries listed?

it's all about economics

[njx9]

Originally Posted by Brent

what trade is conducted between North Korea and any of the countries listed?

it's all about economics

well that and that they have enough artillery staged near the border to utterly annihilate south korea, plus enough people in their army to clean up any stragglers. they might be a 3rd world country, but they back themselves up with some teeth.

Originally Posted by Chucky

Guys...I desperately need help working my TI-83 calculator. I need to make a graph that has two variables on it...how would I go about doing that? +rep and such

aren't all the ti-83 graphs basically y=$x in the normal mode? i think there's another mode where you can place x and y on the same side (i.e. x^2+y^2=z), but it's been like, 15 years since i last did any programming on one of those.

[descendency]

Originally Posted by Chucky

Guys...I desperately need help working my TI-83 calculator. I need to make a graph that has two variables on it...how would I go about doing that? +rep and such

2-independent variables?

Or just two variables? Because y=x is two variables (1 dependent and 1 independent). If this is what you are looking for there is a blue button with white lettering that says Y=. Hit that. Type in what you need then hit the blue graph button. (sorry if this is obviously wrong)

The TI-89 (I own one) was the first TI calculator to provide 3D (2 independent variables, 1 dependent ie z = f(x,y)) graphing. It's very very different from an TI83.

You might be able to use "Parametric" mode (don't know if it has one - honestly, I haven't used one in ~10 years), but your equations have to be parameterized.

[Bosanac01]

You must be a real nerd to have to buy a TI-89. Those things are complicated as hell.

[CJSchneider]

Originally Posted by Chucky

Guys...I desperately need help working my TI-83 calculator. I need to make a graph that has two variables on it...how would I go about doing that? +rep and such

http://www.prenhall.com/divisions/es...graphing/ti83/

[Mr. Goosemahn]

Anyone here good at calculus?

[njx9]

1, 2, or 3?

[Mr. Goosemahn]

Originally Posted by njx9

1, 2, or 3?

Calc 2

10 chars

[njx9]

ugh. i used to know my integrals, but i'm probably pretty rusty. what's the problem?

[Mr. Goosemahn]

It's this:

Find exact coordinates of the centroid of the region bounded by the given curves.
y = 3sin(x)
y = 3cos(x)
x = 0, x = π/4

edit: we're studying moments Mx and My, as well as center of mass of systems.

[yourfavestoner]

Ew, math. Humanities ftw.

[njx9]

Originally Posted by Mr. Goosemahn

It's this:

Find exact coordinates of the centroid of the region bounded by the given curves.
y = 3sin(x)
y = 3cos(x)
x = 0, x = π/4

edit: we're studying moments Mx and My, as well as center of mass of systems.

ugh.

yeah, rusty.

do you have any of the basic parts done? i'm coming up with really hideous values along the lines of

n = (8 tan^(-1)(1-sqrt(2)))/(8 pi-1)

which doesn't 'feel' right (or seem logical). it gives a general value of -0.13.

edited to add: are you guys doing multiple integration? that should make it easier, but i really can't remember that well enough.

[derza222]

Originally Posted by Mr. Goosemahn

It's this:

Find exact coordinates of the centroid of the region bounded by the given curves.
y = 3sin(x)
y = 3cos(x)
x = 0, x = π/4

edit: we're studying moments Mx and My, as well as center of mass of systems.

http://answers.yahoo.com/question/in...4155807AAjGmzy

Yahoo answers is clutch. I can help you out if some of it doesn't make sense, but that should help.

[njx9]

yeah, that's much better.

as a sidenote, this page may also be helpful, though without the actual answers.

http://www.physicsforums.com/showthread.php?t=249248

[wogitalia]

Ew, math. Humanities ftw.

Ew, math. Commerce ftw. We avoid any real math and get a real job at the end ;)

[njx9]

Originally Posted by wogitalia

Ew, math. Commerce ftw. We avoid any real math and get a real job at the end ;)

bah. i'm with yfs. i didn't have to do math or spend my time looking at spreadsheets.

[Mr. Goosemahn]

I've got to take Calc 3 and technically that's that last math course I'm taking, though I'll be using it for a long time. Not very complicated math though.

[descendency]

Originally Posted by yourfavestoner

Ew, math. Humanities ftw.

Humanities are awesome until you need a job.

[njx9]

Originally Posted by descendency

Humanities are awesome until you need a job.

myth. all you need is a piece of paper. the only benefit to any degree are the connections you get.

[derza222]

Originally Posted by Chucky

Guys...I desperately need help working my TI-83 calculator. I need to make a graph that has two variables on it...how would I go about doing that? +rep and such

Like descendency asked, 2 independent variables (x, y, z) or just 2 variables (x, y)? Makes a huge difference. Pretty sure you can't do it with 3 total variables on the TI-83, but I'm sure a few people could walk you through it with 2.

Originally Posted by njx9

myth. all you need is a piece of paper. the only benefit to any degree are the connections you get.

Definitely easier to get your foot in the door and get specific jobs with certain degrees, but yeah I generally agree with this.

[wogitalia]

myth. all you need is a piece of paper. the only benefit to any degree are the connections you get.

Works VERY differently over here. If you don't have the degree that are prerequisites then you aren't even getting a call. You aren't working in any job that is really worth it without a degree. The only exception being teaching at universities, which whilst technically is teaching, actually only requires the degree you are teaching in...

But yeah, you aren't working as a geologist, engineer, accountant, in finance, medical, teaching, veterinary or anything of the likes without the degree in that subject. You don't need a degree if you want to work in fast food, labouring or driving a truck but if you want any of the really good paying jobs then you need a degree.

[aLARGEtopHat]

Originally Posted by njx9

myth. all you need is a piece of paper. the only benefit to any degree are the connections you get.

Statement only holds true if you go to a college in which all degrees are considered worthless. Otherwise completely false.

[njx9]

Originally Posted by aLARGEtopHat

Statement only holds true if you go to a college in which all degrees are considered worthless. Otherwise completely false.

demonstrably untrue. otherwise, i'd be doing the same thing brent and cj are doing. beyond the fact that i went, not a single interviewer has ever cared what i actually did in college for my major, given what i could demonstrate ability doing.

[aLARGEtopHat]

Originally Posted by njx9

demonstrably untrue. otherwise, i'd be doing the same thing brent and cj are doing. beyond the fact that i went, not a single interviewer has ever cared what i actually did in college for my major, given what i could demonstrate ability doing.

And you also work in sales/tech support... Please find me some humanity majors that are working in desirable positions. Lets say analyst positions at investment banks, management consulting, and engineering firms. At my school most of these positions are only on the engineering or business job boards, which are restricted from everyone else.